Storage-battery electrode.



PUT. KAMPERDYK. STORAGE BATTERY ELECTRODE.

APILIUATION TILED DEC. 6,1909

Patented Jan. 31, 1911.

2 SHEETS-$HEET i.

ATTGRNEYS P. J. KAMP BRD K.

STORAGE BATTERY ELECTRODE.

APPLICATION FILED DEG. 6,1909

Patented (12.12.31, 1911 2 SHEETS-SHEET 2.

WITNESSES:

ATTORNEYS P'IERRE KAMPERDYK, on NEW YoRK, N. Y.

Tool! whom it may concern:

Be it known that I, Pinnnn'J. KAMrnnniK, a subject of the King of Belgium, and a resident of the city of New York, borough of 'Manhattan, in the county and State of New York, 'have invented a new and Improved Storage-Battery Electrode, of which the following is a full. clear, and exact description;

This invention relates to a new and improved active plate for, storage or secondary batteries.

An object of this invention is to provide a device which will be simple in construction,

. strong. durable, inexpensive to n'ianufactnre,

and having a maximum exposed surface for a given magnitude. l

A further object of this invention is to provide a durable storage hatterelectrode, in which the active n'iatcrial is absolutely prevented from falling otf, presenting a greatly increased area to the electrolyte, and making short-circaiting absolutely impossible. i

Another object of this-invention is a spe cial eonstructionof electrode in which the entire expansion is divided into a number of independent unit cells, preventing thereby buckling; oi the electrode.

Another object. of this invention is to build up an electrode composed of a number of independent units. so that it any one of themshould get out of order the electrode is only slightly impaired, .said electrode be ing formed of a number of indepeiulent unit cells filled with active material, and formed of thin porous walls, so that the'aetive 1nate rial can be .acted on by the electrolyte "in such a manner as to a void si1pplementzn'y Ill" ternal l'GSlHitlllt'tL.

-It is well known that in the common form' of storage battery electrodes I helttoiol't. known. the active material. which is held in specially designed grids. will slowly but blll'lfl) fall out of the :nc.ai'=1er which these electrodes are rendered useless. "lo overcome this tihjoetionable feature, and to'pre- "vent short-clreuitiup. in the present invenhold the cups in their respective positions.

For this purpose the invention consistsof an electrode for secondary batteries, which Specification of Letters Patent. Application filed December 6; 1909.

STORAGE-BATTERY nrnornonn.

4 Patented Jan. 31, 191 1. Serial No. 531,555.

comprises a condnctingplate, a plurality of cups of porous material provided with corrugated faces, edge ribs and intermediate longitudinal intersectingribs, each cup be ing filled with active material, and means for holding-the cups and active material in face'contact with the conducting plate.

The invention consists fui'ther of an electrode for secondary batteries. which (our prises a conducting plate provided with edge ribs aiul-longitlulinal transverse intersecting ribs, a plurality of cups of porous material provided with corrugated faces. edge ribs andlongitudinal intersecting ribs. ach cup being filled with active material and being; placed in one of the spaces or cells formed on the'eonducting plate. and means for holding the cups and active material in contact with the conductingplate.-

The invention consists further of certain details of construction which will be fully described hereinafter and finally pointed outin the elaims- Reference is to be had to the accompanying drawings forming a part of this specification. in which similar characters of reference indicate correspondin parts in all the views, and in whicl1- Figure 'l is a fragmentary side view in clevation: Fig. 3 is a vertical transverse sew tion: Fig. 3 is a longitudinal section. taken at the apex of one of the corrugations lll lllt cups, on the line t -2t in Fig. 2; l i'gi l is a view similar to Fig. taken at the middle of one of the vallevs of the corrugations in the caps. on the line -l-----l in Fig. 2; and Fig. 5 is a fragmentary side. view showing the manner of securing the cups to the conducting plate.

Referringmore particularly to the scparate parts ol the device. l, indic'a! cs the conducting plate ol the electrode \\'llt(ll may be of, anv suitable l'orui and l11:lltlli\l.lilll prcl erablv tllll$l l.- olf a sheet ol lead liavin; longiludinallv and transxcrselv-arranged ribs 52 extending fr m each ide of the plate 1 along tlie'etlu tw tlu-reol' and midway ot'lhe 'l rthereof. H as to form reinforcing locking ribs whereby the plate 1 is divided into. sections. 'In each ol *the tlll('l].-. there. is provided on each side of the plate 1. a (up 3, whicli'is in'e'l'erahlv made of some highly porous material, Stlt'll as unglazed porcela n.

By porous material is intended material capable oi permitting the flow of the fluid electrolyte tlieretln'ough, but imperforated so as to prevent the transudation of solid material. 1 I

The cu s 3 are. formed on their faces with 4 thin 'shal ow corrugations 4 andWith ribs 5 5 extending along the edges and 1011 "tudi-. nally across said corrugations inter'medi v between the side ribs, so that but small addi- ,tional internal resistance is oliere dto the current and a greatly increased surface exposed to the electrolyte, thus decreasing the lnternal resistance of the electrode. The edgeribs and intermediate ribs 5 serve for strengthening the cups and prevent their warpin during the firin" operation. Each cup is lled wlth av suita le active material 6 of any. known composition, suchas lead oxid. The outer. sides of the edge ribs are preferably made inclined or beveled, or with.

some retaining edge, so that when the ribs 2 of the conductive late 1 are pressed or melted down over said beveled edges a'wedge loek'is obtained for securely holding the cups'in position on the conducting plate, with the faces of the ribs and the active material in direct and intimate contact with the conductin plate- In the gums", some of the ribs are shown inth'eir raised position before being pressed or melted down, and some of them are shown in their pressed or melted down position, so that the action may be fully understood. The active material in the cups 3 is thus forced into intimate contact with the plate 1, makiiig the electrical connection practically perfect. The plate l is provided with an inte 'ral lug 7 which extends therefrom, whereb. connection may be made to one of the terminals of the battery. As the active materiatl tis inclosed on all sides by the edge 40 ribs-of Erie cups forming direct contact with ithe. con ncting plate 1, the active material ;is fullylinclosed and cannot drop out of the icells ofhtihe conductin plate or be washed iout or boiled out of t e cups. The active gmateriala is placed in intimate contact with ithe conducting plate and surrounded by the edge} ribs ofeach cup so as to be inclosed on ll'sidjes, so as to render it absolutely impos siblegttfhat the active material can be pushed -d'r op ,ed out by expansion at any point 'vl f the Two ormore of the electrodes Eformed of a conducting plate and cups filled itlractive material on opposite sides can tbs assembled and tightly strapped together so as to hold the small porous cups firmly on the conducting plates.

/It will thus be seen 'from the'above de-.

scription that an electrode of low resistance,"

great strength and efficiency, and with the maximum surface exposed to the electrolyte, is formed in a cheap and simple manner.

WhileI have shown the plate provided with eight cups, four on each'side, I may atelv each other into a suitable general inventive feature of this ap licationr Further, two of these cups may e juxtaposed together along their edge ribs relatively to the conducting plate between them and extending outside of the cups. Several of these pairs of juxtaposed cups filled. with active material and a conducting platebetween them may then be placed adjacent to porting and locking conducting'frame, provided with a lug, ducing thereby the desired complete electrode. I

While I havshown the supporting plate as ,formed of'a solid-sheet extending between the cups, I may also provide a plate of any suitable form or shape, having a plurality of openings extending therethrough. I

Having thus described my invention, I claim as new and desire to secure by Letters Iatent;

1. In an electrode for secondary batteries, the combination, with a conducting plate having edge ribs and intermediate intersecting ribs, of a plurality of porous cups 'located in the cells between said ribs, said cups being provided with edge ribs on all their sides, corrugated face and longitudinal ribs and filled with an active material atthe side adjacent to the conducting plate.

2. In an electrode for secondary batteries,

the combination, with a conducting ,plate provided with ribs extending around its edges and intermediate intersecting ribs, of porous cups placed in the cells formed by said ribs, said cups being provided with edge ribs on all their sides and intermediatelongitudinal ribs, and filled with active inate rial, and means for securing said cups to the conducting plate.

3. In an-electrode for secondary batteries, the combination, provided with edge ribs. and intermediate intersecting ribs, of porous cups filled with active material and retained on said conducting plate, said cups being beveled on all their sides and provided with corrugated faces and longitudinal strengthening ribs, and means for securing said cups in the cells of the conducting plate.

testimony whereotI have signed .my

name to this specification in two subscribing. witnesses. .PIERRE-J. KAMPERDYK. Witnesses HonArIo Wnrrrno,

PHILIP L.' RoLLHAUs.

the presence of mold and a sup-- cast around them, pro-' I10 With a conducting plate 

